Improvement in looms



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WILLIAM J. QUINN, OF PHlLAD-ELPHIA, PENNSYLVANIA, ASSIGNOR FURBUSH dtGAGE, OF SAME PLAGE.

LettrsPatent No. 74,938, dated February 25, 1868.

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TO A LL WHOM IT'MAY-CONCERN:

Be it known that I, WILLIAM J. QUINN, of Philadelphia, Pennsylvania,have in vent'ed an Improvement in Looms; and I do hereby declare thefollowing to be a full, clear, and exact'description 'of the same.

Myinvention relates to improvements in drop-box looms, tl1e saidimprovements consisting ofdeviccs-'ullyv described hereafter, by whichthev threads from the shuttles above'4 and below the operating-shuttleshallA not interfere with the free action ofthe i stop-motion. l 4' Inorder to enable others skilled in the art to make and'nse my invention,I will now proceed to describe its construction and operation,'re`erencebeing had to the accompanying. drawing,vwhich forms a, part of`th'isspecication, and in which V' Y j V 4 Figure 1 is a front elevation,partly in section, of suilicient of..a drop-.box loom toshowmybimprovement.

Figure 2, the same, showingv the operating parts in a different position. j

Figure 3 is a transverse sectionalelevation on the line 1-2, tig. 1'.

Figure 4 is a sectional plan view'of part of the loom; and

Figure 5 isa vertical section of. part of the loom drawnto an enlargedscale.

A A are the Vside frames, B is thebreastbeam,land C the lathe of theloom, Viat-.vibrating motion being imparted to the lathe by acrank-shaft, D, to which it'is connected by rods a d, as in ordinarylooms. 4At ope'end ofthe lathe slides the usual drop-box E, in which arefour con1pa'rtments,f, f1,f2, and f3, containing'th-e shuttles 6 btb113, and which is operated by a jacquard-apparatus, a pattern-wheel, ora chain, in the ordinaryvmanner.- From the lathe-to thehand-rail cZextend vertical wires, e e, between which projects the rodm of the'weft-fork; one end of.v the 'rod extending into a groove in thcbreast-beam B, and the other beingfconnectedto the stop'- mechanism, forarresting the motion oi the loom when the rod is moved towards thebreast-beam. From the rod m project three bent wires or ngers, n n n,which are so arranged that the bars e e will pass between them, as inordinary weft-forks, thet'ront portion of each of thesaidingersbein'gbentto the concaveform shown in fig. 5 of the drawing. Thatportion ofthe rod m directly beneath the lingers is bent, as 'shown infigs. 3 and, 5,

Si as to forma recess, @for a purpose described hereafter. 'lo thedropbox VE is secured a bracket, F, a crosse' piece, 0,'on whichisiadaptel to and (when the box is lat the limit of its downward motion)tits' in a recess, s, rin the lface ofthe lathe adjacent to the bars ee'. On guides in the bracket F slide tub'sp p, secured at their lowerends to a cross-piece, o1, and inthe said tubes slide guide-rods q q,which are connected at theirlower. ends to al lcross-piece, o2,extending beneath the cross-piece o1.

When the drop-box is'at the limit of its downward movement, thecross-pieces o o1 o2 willbecontained within the recess s, as shown 1iniig. 1,but'when the box is raised the'cross-pieees will belifted fromthe recess', stops on the guides p g limiting the movement of thelatter. When the drop-boi; E is inthe position shown inv .1', the'shuttle b in its movement across thelathe will carry its thread infront'of the bars ce, and over the cross-piece o; When the frame iselevated so as to bring the shuttle b1 into operation, the cross-pieceo1 will be level with the face of the lathe, andthe shttle will passand-'carry its thread 'over the said cross-piece, and beneath thecross-piece o'.v

In like manner, when the shuttle Ab2 is in operation', its thread willbe carried over. the cross-piece 02, while the .thread of the shuttle b3when the frame is at the limit of its'l u `ward motion, will be carriedover the recess s, and beneath the cross-piece o2. When the'threadofanyshuttle is across the bars e, and the latter vapproach Vthe/fingers n,the thread will strike the curved edges ot" the ngers, and the latter,and the rodto which they areattaehed, will be carried forward. Shouldthe threadbreak, however, the rods c willrpass between the fingers, thelatter will remain at rest, and the motion of the loom will be arrestedin amannertoo well known to those familiar with the constrnction andoperation of weft-forks for looms to need further description.

VrWhen a shuttle isA in operation, the threads of those shnttles whichremain quiescent,and are situated above' the operating-shuttle, willpass from each elevatedshuttle over the oppositecrossfpieces and totheedgeof the fabric, the threads being thus maintained in such an elevatedpositionthat theycannotbe struckby the ngers n and interfere with the'action of the stop-motionshould the'thread of the operating-shuttlebreak. The threads fromthe shuttle` orA shuttles below theoperating-shuttle will Passover the rod la beneath the cross-pieces inthe recess s and to the edge ot' the fabric,V the recess te,formedbylthc bending of 'the rod'm, receiving these threads when thelathe is carried forward, so that they -will not strike the fingers nand interfere with the action of the stop-motion.

Although'the above-described devices may he applied to looms havingdrop-boxes at one, end only of the lathe,- they are especiallyapplicable to looins in which drop-boxes are at both ends ofthe lathe,and in which it has heretofore been found dicult toprevent the threadsof the shuttles not in operation from interfering `tvith the action ofthe stopmotion.

I claim as my invention, and desire to secure by Letters Patent- 1. sThe combination, with a drop-box, of a series of self-adjusting platesor cross-pieces, o o o2, wherebyl the threads ofthe shuttles above thatinoperation areheld'above the ngersof the weft-fork,substantially as andfor the flurpose described. l l I 2. The weft-fork, provided with arecess, te, formed between the rod m and ngers n, as and for thepurposespecedl In testimony whereof, I have signed my name to thisspecification in the presence of two subscribing witnesses.

WILLIAM J. QUINN. Witnesses JOHN F. GOODWIN, CHARLES HoWsoN.

